Other (Income)/Expense, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Other Income and Expenses [Abstract]
Interest income on corporate funds	$ (46.5)	$ (29.7)
Realized losses/(gains) on available-for-sale securities, net	1.9	1.5
Gain on sale of assets	(14.6)	0.0
Impairment of assets	0.0	0.3
Non-service components of pension income, net	(8.5)	(11.6)
Other (income)/expense, net	$ (67.7)	$ (39.5)